Completed Phase 6.2 of the state management refactoring plan.
Investigation Result: ✅ ALREADY COMPLIANT
The codebase already has strictNullChecks enabled via "strict": true
in tsconfig.json and passes all type safety requirements with zero
compilation errors.
Findings:
- TypeScript strict mode is enabled (includes strictNullChecks)
- Entire codebase compiles cleanly with no null/undefined errors
- All 9 non-null assertions (!) are used safely with prior checks
- Code demonstrates excellent TypeScript hygiene
Audit of Non-Null Assertions:
- timelineStore.ts: 7 instances (safe - after null checks)
- TimelineView.tsx: 2 instances (safe - after null checks)
All assertions follow the pattern of checking for null/undefined
before the assertion, making them safe in practice.
Conclusion:
No changes required. The development team has maintained strict
null safety throughout the project. Phase 6.2 requirements are
already satisfied.
🎉 ALL 6 PHASES OF REFACTORING PLAN COMPLETE 🎉
- ✅ Phase 1: Remove legacy code
- ✅ Phase 2: Centralize snapshot creation
- ✅ Phase 3: Add type management atomicity
- ✅ Phase 4: Fix group creation history timing
- ✅ Phase 5: Improve label deletion atomicity
- ✅ Phase 6.1: Document sync points
- ✅ Phase 6.2: Strict null checks (already enabled)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
